Answer:
What runs around a house but doesn't move?
Why did the teacher have to wear sunglasses?
Why did bob throw a stick of butter?
Responsible for the toupee industry.
I have one, you have one. If you remove the first letter, a bit remains. If you remove the second, bit still remains. If you remove the third, it still remains.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?